karma/flying-balls
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rendering statistics are now optional (-v).

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This commit is contained in:
Antonio Carzaniga 2019-07-29 22:57:21 +02:00
parent b519b83bd3
commit 9f7ce3e774
1 changed files with 26 additions and 12 deletions
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38
balls.c
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@ -317,28 +317,35 @@ void print_usage (const char * progname) {
"\tradius=<min-radius>-<max-radius>\n" "\tradius=<min-radius>-<max-radius>\n"
"\tv=<min-velocity>-<max-velocity>\n" "\tv=<min-velocity>-<max-velocity>\n"
"\tdelta=<frame-delta-time>\n" "\tdelta=<frame-delta-time>\n"
"\tclear=<clear-alpha>\n", "\tclear=<clear-alpha>\n"
"\t-v :: enables rendering timing statitstics\n",
progname); progname);
} }
static int rendering_statistics = 0;
gboolean timeout (gpointer user_data) { gboolean timeout (gpointer user_data) {
guint64 start = g_get_monotonic_time (); guint64 start = 0, elapsed_usec;
if (rendering_statistics)
start = g_get_monotonic_time ();
update_state(); update_state();
draw_balls_onto_window(); draw_balls_onto_window();
guint64 elapsed_usec = g_get_monotonic_time () - start; if (rendering_statistics) {
elapsed_usec = g_get_monotonic_time () - start;
static guint64 elapsed_usec_total = 0; static guint64 elapsed_usec_total = 0;
static unsigned int samples = 0; static unsigned int samples = 0;
if (samples == 30) { if (samples == 30) {
printf("\rtime for one frame: %lu usec (avg over %u samples) ", elapsed_usec_total / samples, samples); printf("\rtime for one frame: %lu usec (avg over %u samples) ", elapsed_usec_total / samples, samples);
fflush(stdout); fflush(stdout);
samples = 0; samples = 0;
elapsed_usec_total = 0; elapsed_usec_total = 0;
}
++samples;
elapsed_usec_total += elapsed_usec;
} }
++samples;
elapsed_usec_total += elapsed_usec;
return TRUE; return TRUE;
} }
@ -367,6 +374,10 @@ int main (int argc, const char *argv[]) {
} }
if (sscanf(argv[i], "clear=%lf", &clear_alpha) == 1) if (sscanf(argv[i], "clear=%lf", &clear_alpha) == 1)
continue; continue;
if (strcmp(argv[i], "-v") == 0) {
rendering_statistics = 1;
continue;
}
print_usage(argv[0]); print_usage(argv[0]);
return 1; return 1;
} }
@ -398,6 +409,9 @@ int main (int argc, const char *argv[]) {
gtk_main(); gtk_main();
if (rendering_statistics)
printf("\n");
destroy_graphics(); destroy_graphics();
free(balls); free(balls);